<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
	<title>box2</title>
	<script type="text/javascript">
	window.onload = function  () {
		box = document.getElementsByClassName("box");


		  




	}









	</script>
	<style type="text/css">
			.box{
				width: 200px;
				height: 200px;
				background: black;
			}
	</style>
</head>
<body>
	<div class="box"></div>
	<div class="box"></div>
</body>
</html>